They get honor.
How cool is that?
Only two men have completed all four stages so far that I have seen.
Its amazing to see people compete for honor and recognition instead of millions. The top competitors train together at the house of one of them. He built a course in his backyard.
These men come from all walks of life.
My favorites are Takeda the fireman, Nagano the fisherman, and Bunpei the office worker